The scanner has a built-in circuit that lets you 
recharge Ni-Cd or Ni-MH batteries while they are in 
the scanner. To charge the batteries, set ALKALINE/
RECHARGEABLE inside the battery compartment to 
RECHARGEABLE, install the batteries in the scanner, 
and connect an external AC or DC adapter to the 
scanner's DC 6V jack (see “Using AC Power” on 
Page 10 or “Using Vehicle Battery Power” on 
Page 11). CHArg appears while the scanner is 
charging the batteries.
Warning: Do not connect either adapter to the 
scanner if non-rechargeable batteries (such as 
alkaline batteries) are installed in the scanner and 
ALKALINE/RECHARGEABLE is set to 
RECHARGEABLE, or if you are unsure of the 
switch's position. Non-rechargeable batteries will 
get hot and can even explode if you try to recharge 
them.
Before you use Ni-Cd or Ni-MH batteries for the first 
time, charge them for 14 hours to bring them to a 
full charge.
Discharged batteries take about 14 hours to fully 
recharge.
Notes:
• Ni-Cd batteries last longer and deliver more 
power if you occasionally let them fully 
discharge. To do this, simply use the scanner